Backwards Compatibility - PlayStation 5 Guide - IGN

In a reveal with Wired [1], PS5 Lead Architect Mark Cerny confirmed that the PlayStation 5 would have Backwards Compatibility with all PlayStation 4

Opinion: The PS5 Reveal Has Put All the Pressure Back on Microsoft - IGN

Digital edition dilemma: Which PS5 or Xbox to get?

Xbox backward compatibility is done, here's the full list of 595 games

PlayStation's Long, Complicated History with Backward Compatibility - IGN

How PS5 Backwards Compatibility Works - GameSpot

IGN - The state of PS5's backward-compatibility continues to remain in flux, as Ubisoft posts and then deletes a comment about the PS5 not being compatible with PS3, PS2, and PS1 games.

PS5 Won't Be Backwards Compatible With PS3, PS2, or PS1 Games - IGN

PlayStation 3 - Wikipedia

PlayStation Portal Remote Player - Official Pre-Order Trailer